Knife-sled motion for pile-fabric looms.



i No. 720,285. YPATEIITED rms. 1o', 19o-3..

E. H. RYON. KNIFE SLED MOTION FOR PILE FABRIC LOOMS.

APPLIGATION FILED man, 1902. V No MODEL.

UNITED I -STATES PATENT OFFICE.

EPPA H. RYON, OF VORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON d KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPO- RATION OF MASSACHUSETTS.

KNIFE-SLED MOTION FOR PILE-FABRIC LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 720,285, dated. February 10, 1903.

Application filed February 11, 1902. Serial No. 93,537. (No model.)

To a/ZZ whom, t muy concern:

Be it known that I, EPPA H. RYON, a citizen of the United States, residing at Worcester, in the county of Worcester and State of 5 Massachusetts,have invented certain new and useful Improvements in Knife-Sled Motions for Pile-Fabric Looms, of which the following is a specication. f

My invention relates to knife-sled motions 1o for pile-fabric looms.

The object of my invention is to make an improved knife-sled motion or mechanism for operating the knife sled or carrier and knife which shall be of simple construction and I5 shall communicate to the knife-sled and knife a positive and steady motion.

My invention consists in certain novel features of construction of my knife-sled motion, as will be hereinafter fully described.

I have shown in the drawings onlysufcient portions of a loom, with my knife-sled motion applied thereto, to enable those skilled in the art to which my invention belongs to understand the construction and operation thereof.

Referring to the drawings, Figure 1 shows a portion of a loom-frame, the crank, and bottom shaft and my knife-sled motion applied thereto. Fig. 2 shows, on an enlarged scale, a side view of the rack-and-pinion 3o mechanism with the side guide plates removed. Fig. 3 is a cross-section on line 3 3,

Fig. 2, looking in the direction of arrow a,

same figure. Both side guide-plates are shown in this figure. Fig. 4 shows the rack-andpinion mechanism shown in Fig. 1 detached. Fig. 5 shows a bottom view of the parts shown in Fig. 4 looking in the direction of arrow b, same figure; and Fig. 6 shows one of the side guide-plates detached.

In the accompanying drawings, 1 represents the loom sides or frame; 2, the guideway for the knife sled or carrier 3, having the knit'e 4 attached thereto. At one end of the guideway 2 is a guide-pulley 5 and at the other end a corresponding guide-pulley 5.

Each pulley and 5 is mounted in a bracket 6, secured in this instance to the under side of the guideway 2. A cord 7 is attached at one end to the knife sled or carrier 3 in the 12, secured to the loom side or frame, and

over the pulley 5 to the knife sled or carrier 3, to lwhich it is attached. The crank-shaft 13 is geared to the bottom shaft 14 through gears 15 and 16 in the usual way.

All of the above parts maybe of the ordinary construction and operation.

I will now describe my improvements in knife-sled motion or mechanism for communicating a reciprocating motion to the knife sled or carrier 3 and knife 4, attached thereto, through the cord 7.

On the bottom shaft 14 isfast a bevel-pinion 17, which meshesv with a bevel-gear 18, fast on a short shaft 19, (shown by broken lines in Fig. 1,) mounted in bearings on the stand 20, secured to the loom side or frame. On the shaft 19 is fast a crank-arm 21, (shown by broken lines, Fig. 1,) to which is pivotally connected one end of a connector or rod 22. The other end of said connector 22 is secured to the end 23 of a rack 23, the teeth of which mesh with a pinion 24 on a short shaft,25, mounted in bearings in a stand 26, secured to the loom side or frame. The pinion 24 has an extended hub 24 on each side. (See Fig. 3.) On vthe shaft 25 is also fast a gear 27, which meshes with a pinion 28, fast on the shaft 9 of the drum 8. In connection with the rack 23 and the pinion 24 I use two detachable slotted guide-plates 29, one on each side of the rack 23, which are preferably secured thereto by bolts 30, extending through holes 23" in the rack 23. The extended hub 24' on the pinion 24 extends through and fits in the slotted portion of the guide-plates 29, (see Fig. 3,) and said' plates 29 hold the rack 23 in its proper position relative to the pinion 24 as said rack is moved back and forth by the movement of the crankarm 21 to rotate the pinion 24 first in one direction and then in the other and communicate through gear 27 and pinion 28 a rotary motion to the drum 8 and through cord 7 a sliding motion to the knife sled or carrier 3 and knife 4 first in one direction and then in the other on the guideway 2 in the usual and well-known way.

The operation of my improvements will be readily understood by those skilled in the art from the above description in connection with the drawings.

The revolution of the bottom shaft 14,Which has one revolution to two revolutions of the crank-shaftjl, as is customary, will, through the bevel-pinion 17, gear 1S, and shaft 19,com mnnicate a regular rotary motion to the crankarm 21 and through intermediate connections above described a rotary motion to the drum 8 first in one direction and then in the other and cause the knife sled or carrier 3 and knife 4 through cord 7 to have a reciprocating movement on the guideway 2.

It will be understood that the details of construction of my improvements may be varied, if desired. For exam ple, the gear 27 and pinion 2S,intermediate the 1'ack-and-pinion mechanism and the drum 8, may be dispensed with and the pinion 24 mounted directly on the shaft 9 of the drum 8, it' preferred.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a knife-sled motion for pile-fabric looms, the combination of a knife-sled, a cord attached thereto, guide-pulleys and a drum around which said cord passes, a. pinion operatively connected to said drum and having side extended hubs, a rack engaging said pinion, slotted guide-plates attached to the rack on each side of said pinion and engaging the side extended hubs for guiding and properly positioning the rack with respect to the pinion, and means for reciprocating said rack.

2. In a knife-sled motion for pile-fabric looms, the combination of a knife-sled, a cord attached thereto, guide-pulleys around which said cord passes, a drum to which said cord is operatively connected, a pinion carried by said drum, a second pinion engaging connections between the same and the iirst-named pinion and having a hub extended beyond the pinion at each face thereof, a stud or shaft carrying said pinion and extended through said hub, a rack engaging said second pinion, guides secured to the rack above and below the said pinion on each side thereof and resting on the extended hub, and means for reciprocating said rack.

EPPA H. RYON.

Witnesses: i

J. C. DEWEY, M. HAAS. 

